Molybdenum as a high temperature material
has high melting point, good electrical conductivity and thermal conductivity,
low coefficient of expansion, excellent thermal shock resistance and heat and
high temperature resistance performance. But because molybdenum
recrystallization temperature is low, brittle and room temperature strength low
and other defects, so it's application is limited. The alloy can greatly
improve the shortcomings of molybdenum, and thus developed a variety of
molybdenum-based alloys, such as MHC, TZC, and TZM and so on. Of which the most
widely used is titanium-zirconium-molybdenum alloy
(TZM). Mainly because TZM overcome a series shortcomings of molybdenum, while
retaining the good performance such as high-temperature heat resistance of
molybdenum.
It has a higher recrystallization temperature, good corrosion resistance, good
mechanical properties and good high-temperature strength and low strength and
other advantages. According advantages of TZM it is widely used in various fields,
such as TZM has good heat resistance, and it is often used to make nuclear
energy parts and the spacecraft's heat radiating
plate. While its shows a good mechanical properties in high temperature and
pressure, so commonly used in the military industrial sector, such as rocket
nozzles, gas pipelines and so on.
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